The Rajah's diamond : : an opera in one act, op. 99,
- A6/4.
- Is-gyfres
- 1979 /
Scores, pencil sketch and libretto.
libretto by Myfanwy Piper, based on a story by R. L. Stevenson.
Dangos 3 canlyniad
Disgrifiad archifolThe trumpet major : : an opera in three acts, [op. 103],
- A6/5.
- Is-gyfres
- 1980-1981 /
Scores, pencil sketch, libretto and related material.
libretto by Myfanwy Piper, based on the novel by Thomas Hardy.
What the old man does is always right : : opera in one act, op. 93,
- A6/3.
- Is-gyfres
- [1977]-1979 /
Full score, pencil sketch, libretto and camera script.
libretto by Myfanwy Piper.